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svlad2 [7]
3 years ago
5

Sharina simplified the expression 3(2x – 6 – x + 1)2 – 2 + 4x. In Step 1 she simplified within the parentheses. In Step 2 she ex

panded the exponent. Which is a possible next step? Simplify the expression by adding and subtracting from left to right. Combine like terms within the parentheses. Combine all x-terms. Distribute the 3 to each term in the parentheses by multiplying.
Mathematics
1 answer:
stiks02 [169]3 years ago
7 0
3x^2 - 42x + 147 - 2 + 4x
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Ten times the sum of negative four and a number. Write as an Algebraic expression then simplify
Tju [1.3M]

Answer:

10x(-4+a)

explanation

4 0
3 years ago
Please please please please please please add help me
nirvana33 [79]

Answer:

5.3

Step-by-step explanation:

Use Pyth Theorem

a^2 + b^2 = c^2

6^2 + b^2 = 8^2

36 + b^2 = 64

b^2 = 28

Sq root of 28 = 5.3

4 0
3 years ago
a volley ball player servers the ball. The ball follows a path given by the equation y=-0.01x^2+0.5x+3 where x and y are measure
dolphi86 [110]

Answer:

(a)

Distance from player should be 13.82 feet or 36.2 feet

(b)

The ball will go over the net

Step-by-step explanation:

we are given

The ball follows a path given by the equation

y=-0.01x^2+0.5x+3

where

x and y are measured in feet and the origin is on the court directly below where the player hits the ball

(a)

net height is 8 ft

so, we can set y=8

and then we can solve for x

8=-0.01x^2+0.5x+3

8\cdot \:100=-0.01x^2\cdot \:100+0.5x\cdot \:100+3\cdot \:100

800=-x^2+50x+300

-x^2+50x-500=0

x^2-50x+500=0

we can use quadratic formula

x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}

x=\frac{-50\pm \sqrt{50^2-4\left(-1\right)\left(-500\right)}}{2\left(-1\right)}

x=5\left(5-\sqrt{5}\right),\:x=5\left(5+\sqrt{5}\right)

x=13.82,x=36.2

So, distance from player should be 13.82 feet or 36.2 feet

(b)

we can plug x=30 and check whether y=8 ft

y=-0.01(30)^2+0.5(30)+3

y=9ft

we know that

height of net is 8 ft

so, the ball will go over the net


5 0
3 years ago
I-Ready
Alex Ar [27]

Answer:

23/7 or 3 2/7

Step-by-step explanation:

it might be the mixed number

4 0
2 years ago
Fill in the blanks below.
Crank
The slope for the first one would be:
y2-y1/x2-x1, so replace those with the coordinates and you'll get:
-3-1/-7-(-7) => -4/0 so I guess the slope is zero

the slope for the second one would be:
-3-(-3)/5-(-4)=> 0/9 I think this one would be undefined.
Check to make sure, though!
4 0
3 years ago
Read 2 more answers
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